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<blockquote data-quote="WheresTheButta" data-source="post: 6293760" data-attributes="member: 559748">alright it&#039;s not exactly pi R^2 for the cone of a subwoofer, because that&#039;s the formula for a circle.&nbsp;&nbsp; a cone is not a circle, by definition.For all intents and purposes though, the effective piston area of an 18&quot; woofer is substantially larger than two 12&quot; woofers.&nbsp; The power handling of an 18&quot; and a 12&quot; subwoofer of the same make/model will be similar, but the 18&quot; will theoretically have 3db or more greater output.The reason two 12&quot; subwoofers of the same make/model is usually louder is because people are running double the power on nearly the same cone size.&nbsp; Every time you double the power, you theoretically gain 3db.If you run the two 12&quot; subs with the same power as a single 18&quot; sub, the 18&quot; sub should be louder given optimal conditions for both.</blockquote>

[QUOTE="WheresTheButta, post: 6293760, member: 559748"] alright it's not exactly pi R^2 for the cone of a subwoofer, because that's the formula for a circle. a cone is not a circle, by definition. For all intents and purposes though, the effective piston area of an 18" woofer is substantially larger than two 12" woofers. The power handling of an 18" and a 12" subwoofer of the same make/model will be similar, but the 18" will theoretically have 3db or more greater output. The reason two 12" subwoofers of the same make/model is usually louder is because people are running double the power on nearly the same cone size. Every time you double the power, you theoretically gain 3db. If you run the two 12" subs with the same power as a single 18" sub, the 18" sub should be louder given optimal conditions for both. [/QUOTE]

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